let app1 = {
    id:"a123",
    price:5,
    location:"河南",
    color:"红色",
    weight:300
}
let app2 = {
    id:"b123",
    price:6,
    location:"山东",
    color:"黄色",
    weight:300
}
let app3 = {
    id:"c123",
    price:7,
    location:"河北",
    color:"绿色",
    weight:100
}
let app4 = {
    id:"d123",
    price:10,
    location:"北京",
    color:"橙色",
    weight:200
}
let list1 = [app1,app2,app3];
list1.unshift(app4)
for(let i = 0 ; i< list1.length;i++){
    console.log("苹果ID:"+list1[i].id+"苹果数量:"+list1[i].price+"苹果产地:"+list1[i].location);
}

//如何去定义一个事项


